Hydraulic pressure control unit, saddle-riding type vehicle, and method for manufacturing hydraulic pressure control unit

Abstract

The present invention achieves a hydraulic pressure control unit for a saddle-riding type vehicle, the hydraulic pressure control unit being capable of further reducing the possibility of decreases in sealing performance between a base and a housing compared to prior art. A hydraulic pressure control unit according to the present invention comprises: a base in which an internal flow path is formed; a housing that accommodates a control substrate and is sealed using an adhesive between the base and the housing; a plurality of holes provided in one of the base and the housing; a plurality of pins provided to the other of the base and the housing and inserted into the holes to position the base and the housing; and a bolt that fixes the base and the housing. When at least one of the plurality of holes is defined as a selected hole and a pin, from among the plurality of pins, inserted into the selected hole is defined as a selected pin, the selected pin is press-fitted into the selected hole.

Description

[0001] [Document name] Statement

[0002] [Title of invention] Hydraulic pressure control unit, saddle-ride type vehicle, and method for manufacturing the hydraulic pressure control unit

[0003] [Technical Field]

[0004]

[001] The present invention relates to a hydraulic control unit to be mounted on a saddle-ride type vehicle, a saddle-ride type vehicle equipped with the hydraulic control unit, and a method for manufacturing a hydraulic control unit to be mounted on a saddle-ride type vehicle.

[0005] [Background technology]

[0006] [.002] Some conventional vehicles are equipped with a hydraulic control unit that controls the hydraulic pressure of brake fluid in a hydraulic circuit filled with brake fluid. For example, when the driver of the vehicle operates an input device such as a brake lever, the hydraulic control unit increases or decreases the hydraulic pressure of the brake fluid in the hydraulic circuit to adjust the braking force generated on the wheels and perform anti-lock brake control. Such a hydraulic control unit includes a base body in which an internal flow path is formed that connects the wheel cylinders and the master cylinder, and a housing that contains a control board that controls a hydraulic pressure adjustment valve that opens and closes the internal flow path.

[0007] [0 0 0 3] Here, sealing must be ensured between the base and the housing. For this reason, hydraulic control units mounted on automobiles such as four-wheeled vehicles have a seal between the base and the housing with an O-ring. On the other hand, straddle-type vehicles, which are a type of vehicle, have less freedom in component layout and less freedom in mounting hydraulic control units than vehicles such as automobiles. For this reason, there has traditionally been a demand for smaller hydraulic control units mounted on straddle-type vehicles. Therefore, in conventional hydraulic control units for straddle-type vehicles, the base and the housing are bonded together with a silicone adhesive, and the silicone adhesive seals the gap between the base and the housing (see, for example, Patent Document 1).

[0008] [Prior art documents]

[0009] [Patent documents]

[0010]

〇 0 0 4

[0011] [Patent Document 1] Patent No. 7303883

[0012] Summary of the Invention

[0013] [Problem to be solved by the invention]

[0014] [0 0 0 5] Conventionally, hydraulic control units for saddle-ride vehicles are assembled as follows. First, a silicone adhesive is applied to the base. Then, the housing is pressed against the base, and positioning pins on the housing are inserted into holes in the base to position the housing and the base. Hereinafter, this process is referred to as the positioning process. During the positioning process, the housing comes into contact with the adhesive. The base and housing are then fixed with bolts. Hereinafter, this process is referred to as the fixing process. The positioning process and fixing process described above are performed in different locations. For this reason, the load that acts on the housing when positioning the housing and the base, pressing the housing against the base, does not act on the housing during the transition from the positioning process to the fixing process. Therefore, during the transition from the positioning process to the fixing process, the housing may become misaligned with respect to the base due to vibrations acting on the base and housing, etc. When such a misalignment occurs, part of the silicone adhesive adhering to the housing is pulled by the housing and becomes stretched. Also, if the shape of the bonding portion of the housing to the base is deformed relative to the shape of the bonding portion of the base to the housing, part of the silicone adhesive adhering to the housing will be pulled by the housing and become stretched during the transition from the positioning process to the fixing process.

[0015] [0 0 6] When the above-mentioned fixing process is carried out after the silicone adhesive has stretched in this way, it is necessary to consider the possibility that when the bolts are tightened and the base and housing approach each other at the point where the silicone adhesive has stretched, air may be contained in the silicone adhesive at that point, causing bubbles to form in the silicone adhesive. If bubbles form in the silicone adhesive, holes connecting the inside and outside of the hydraulic control unit may be formed at the point where the bubbles occurred due to the pressure difference between the inside and outside of the hydraulic control unit, loads acting on the hydraulic control unit from the outside, etc., and the seal between the housing and the base may be reduced.

[0016]

[0007] The present invention has been made in light of the above-mentioned problems, and has as its first object to provide a hydraulic control unit for a saddle-ride type vehicle that can reduce the possibility of a decrease in sealing performance between the base body and the housing. A second object of the present invention is to provide a saddle-ride type vehicle equipped with such a hydraulic control unit. A third object of the present invention is to provide a method for manufacturing a hydraulic control unit for a saddle-ride type vehicle that can reduce the possibility of a decrease in sealing performance between the base body and the housing.

[0017] [Means for solving the problem]

[0018]

[0008] A hydraulic control unit according to the present invention is a hydraulic control unit for a brake system mounted on a saddle-ride type vehicle and capable of performing antilock brake control, and comprises: a base having an internal flow path formed therein that connects a wheel cylinder and a master cylinder; a housing that houses a control board that controls a hydraulic pressure regulating valve that opens and closes the internal flow path and is bonded to the base with an adhesive, and a gap between the base and the housing is sealed with the adhesive; a plurality of holes provided in one of the base and the housing; a plurality of pins that are provided in the other of the base and the housing and are inserted into the holes to position the base and the housing; and bolts that fix the base and the housing, wherein at least one of the plurality of holes is a selected hole; If the other of the selection hole portion and the selected pin is defined as a second positioning portion, the direction in which the selected pin is inserted into the selected hole portion is defined as an insertion direction, and the dimension in a direction perpendicular to the insertion direction is defined as a width dimension, the selected pin is press-fit into the selected hole portion, and the first positioning portion has a width reduction portion at the point where it contacts the second positioning portion, where the width dimension decreases along the insertion direction.

[0019]

[0009] The saddle-type vehicle according to the present invention is equipped with the hydraulic control unit according to the present invention.

[0020]

[0010] A method for manufacturing a hydraulic control unit according to the present invention is a method for manufacturing a hydraulic control unit of a brake system mounted on a saddle-ride type vehicle and capable of performing anti-lock brake control, the hydraulic control unit comprising: a base having an internal flow path formed therein that connects a wheel cylinder and a master cylinder; a housing that houses a control board that controls a hydraulic pressure regulating valve that opens and closes the internal flow path and is bonded to the base with an adhesive, and a gap between the housing and the base is sealed with the adhesive; a plurality of holes formed in one of the base and the housing; a plurality of pins that are formed in the other of the base and the housing and are inserted into the holes to position the base and the housing; and bolts that fix the base and the housing; at least one of the plurality of holes is a selected hole; and the pin of the plurality of pins that is inserted into the selected hole is a selected pin; When a first component is one of the base and the housing and the component to which the adhesive is applied, and a second component is the other of the base and the housing and different from the first component, the method includes an application step of applying the adhesive to the first component, a contact suppression step of, when inserting the pin into the hole to position the base and the housing, press-fitting the selected pin into the selected hole to maintain a gap between the base and the housing and suppress contact between the second component and the adhesive, and a fixing step of tightening the bolt to bring the second component into contact with the adhesive and fix the first component to the second component.

[0021] [Effects of the Invention]

[0011] The hydraulic control unit according to the present invention can maintain a gap between the base and the housing during the positioning process by press-fitting the selected pin into the selected hole, thereby preventing contact between the adhesive and the components of the base and the housing on which the adhesive is not applied. Therefore, the hydraulic control unit according to the present invention can prevent contact between the components of the base and the housing on which the adhesive is not applied and the adhesive at a stage prior to the fixing process in which the base and the housing are fixed with bolts, thereby preventing the adhesive from becoming stretched. Therefore, the hydraulic control unit according to the present invention can reduce the possibility of air bubbles forming in the adhesive during the fixing process compared to conventional units. Therefore, the hydraulic control unit according to the present invention can reduce the possibility of a deterioration in the seal between the base and the housing compared to conventional units.

[0022] [Brief description of the drawings]

[0023] [ 0 0 1 2 ]

[0024] FIG. 1 is a diagram showing the configuration of a saddle-ride type vehicle equipped with a brake system equipped with a hydraulic pressure control unit according to an embodiment of the present invention.

[0025] FIG. 2 is a diagram showing the configuration of a brake system equipped with a hydraulic control unit according to an embodiment of the present invention.

[0026] FIG. 3 is a partial cross-sectional side view of the hydraulic control unit according to the embodiment of the present invention, showing a state in which the base and the housing are fixed together.

[0027] FIG. 4 is a diagram showing the base of a hydraulic control unit according to an embodiment of the present invention and components provided on the base.

[0028] [Figure 5] A partial cross-sectional view of a hydraulic control unit according to an embodiment of the present invention seen from the side, showing the state before the base and the housing are fixed together.

[0029] FIG. 6 is a flowchart illustrating a method for manufacturing a hydraulic control unit according to an embodiment of the present invention.

[0030] [Figure 7] A partial cross-sectional view of a modified example of a hydraulic control unit according to an embodiment of the present invention, seen from the side, showing the state before the base and the housing are fixed together.

[0031] [Figure 8] A partial cross-sectional view of a modified example of a hydraulic control unit according to an embodiment of the present invention, seen from the side, showing the state before the base and the housing are fixed together.

[0032] [Fig. 9] A partial cross-sectional view of a modified example of the hydraulic control unit according to the embodiment of the present invention, seen from the side, showing the state before the base and the housing are fixed together.

[0033] [Figure 1 ○!] A cross-sectional view showing a portion of a modified example of a hydraulic control unit relating to an embodiment of the present invention.

[0034] [Figure 111] A partial cross-sectional view of a modified example of a hydraulic control unit according to an embodiment of the present invention, seen from the side, showing the state before the base and housing are fixed together.

[0035] [Figure 12] A diagram showing the configuration of a brake system equipped with a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0036] DETAILED DESCRIPTION OF THE INVENTION

[0037]

[0013] An example of a hydraulic control unit and a saddle-ride type vehicle according to the present invention will be described below with reference to the drawings.

[0038]

[0014] Note that, although the following description will be given of the present invention being applied to a motorcycle, the present invention may also be applied to other straddle-type vehicles other than motorcycles. Examples of other straddle-type vehicles other than motorcycles include three-wheeled motor vehicles and buggies that use at least one of an engine and an electric motor as a drive source. Examples of other straddle-type vehicles other than motorcycles include bicycles. A bicycle generally refers to any vehicle that can be propelled along a road by applying pedal force to the pedals. In other words, bicycles include standard bicycles, electrically assisted bicycles, and electric bicycles. Furthermore, a motorcycle or three-wheeled motor vehicle refers to a so-called motorcycle, and a motorcycle includes a motorcycle, a scooter, an electric scooter, and the like.

[0039]

[0015] Furthermore, the configurations, operations, etc. described below are merely examples, and the hydraulic control unit and saddle-ride type vehicle according to the present invention are not limited to such configurations, operations, etc. For example, although the following describes a case in which the hydraulic control unit has two hydraulic circuits, the number of hydraulic circuits in the hydraulic control unit is not limited to two. The hydraulic control unit may have only one hydraulic circuit, or may have three or more hydraulic circuits.

[0040]

[0016] In addition, in each drawing, the same or similar members or parts are given the same reference numerals, or the reference numerals are omitted. In addition, illustrations of detailed structures are simplified or omitted as appropriate. In addition, duplicated explanations are simplified or omitted as appropriate.

[0041] [ 0 0 1 7 ] Embodiments.

[0042] <Configuration and Operation of Brake System for Straddle-Type Vehicle> The configuration and operation of the brake system according to this embodiment will be described. Fig. 1 is a diagram showing the configuration of a saddle-type vehicle equipped with a brake system having a hydraulic pressure control unit according to an embodiment of the present invention. Fig. 2 is a diagram showing the configuration of a brake system having a hydraulic pressure control unit according to an embodiment of the present invention.

[0043]

[0018] As shown in Fig. 1 and Fig. 2, a brake system 10 is mounted on a saddle-riding vehicle 100, which is, for example, a motorcycle. The saddle-riding vehicle 100 includes a body 1, a handlebar 2 rotatably held on the body 1, a front wheel 3 rotatably held on the body 1 together with the handlebar 2, and a rear wheel 4 rotatably held on the body 1.

[0044]

[0019] The brake system 10 includes a brake lever 11, a first hydraulic circuit 12 filled with brake fluid, a brake pedal 13, and a second hydraulic circuit 14 filled with brake fluid. The brake lever 11 is provided on a handlebar 2 and is operated by the driver's hand. The first hydraulic circuit 12 generates a braking force corresponding to the amount of operation of the brake lever 11 to a rotor 3 a that rotates together with the front wheels 3. The brake pedal 13 is provided on the lower part of the body 1 and is operated by the driver's foot. The second hydraulic circuit 14 generates a braking force corresponding to the amount of operation of the brake pedal 13 to a rotor 4 a that rotates together with the rear wheels 4.

[0045]

[0020] The brake lever 11 and the brake pedal 13 are examples of brake input units. For example, a brake pedal other than the brake pedal 13 provided on the body 1 may be used as a brake input unit instead of the brake lever 11. Also, for example, a brake lever other than the brake lever 11 provided on the handlebars 2 may be used as a brake input unit instead of the brake pedal 13. Furthermore, the first hydraulic circuit 12 may generate a braking force in a rotor 4 a that rotates together with the rear wheel 4 according to the amount of operation of the brake lever 11 or a brake pedal other than the brake pedal 13 provided on the body 1. In addition, the second hydraulic circuit 14 may generate a braking force in the rotor 3 a that rotates together with the front wheel 3 according to the amount of operation of the brake pedal 13 or the amount of operation of a brake lever other than the brake lever 11 provided on the handlebars 2.

[0046]

[0021] The first hydraulic pressure circuit 12 and the second hydraulic pressure circuit 14 have the same configuration. Therefore, the following description will explain the configuration of the first hydraulic pressure circuit 12 as a representative. The first hydraulic pressure circuit 12 includes a master cylinder 20 incorporating a piston (not shown), a reservoir 21 attached to the master cylinder 20, a brake caliper 22 having brake pads (not shown), and a wheel cylinder 23 that operates the brake pads (not shown) of the brake caliper 22.

[0047]

[0022] An internal flow path 24 through which brake fluid flows is formed in a base 61 of a hydraulic control unit 60 provided in a first hydraulic circuit 12, connecting the wheel cylinder 23 and the master cylinder 20. In the present embodiment, a main flow path 25, a sub-flow path 26, and a pressure-boosting flow path 2ℓ are formed in the base 61 as the internal flow path 24. In the first hydraulic circuit 12, the master cylinder 20 and the wheel cylinder 23 communicate with each other via a fluid pipe connected between the master cylinder 20 and a master cylinder port MP formed in the base 61, the main flow path 25 formed in the base 61, and a fluid pipe connected between the wheel cylinder 23 and a wheel cylinder port WP formed in the base 61. In addition, the brake fluid in the wheel cylinder 23 is released to a main flow path intermediate portion 25a, which is an intermediate portion of the main flow path 25, via a secondary flow path 26. In addition, the brake fluid in the master cylinder 20 is supplied to a secondary flow path intermediate portion 26a, which is an intermediate portion of the secondary flow path 26, via a pressure-boosting flow path 27.

[0048]

[0023] The base 61 is also provided with a hydraulic pressure regulating valve 30 that opens and closes the internal flow path 24. In this embodiment, the base 61 is provided with an inlet valve 31, a release valve 32, a switching valve 33, and a pressure increase valve 34 as the hydraulic pressure regulating valve 30. Specifically, the inlet valve 31 is provided in a region of the main flow path 25 that is closer to the wheel cylinder 23 than the main flow path intermediate portion 25a. The opening and closing operation of the inlet valve 31 opens and closes the flow path portion of the main flow path 25 where the inlet valve 31 is installed, thereby controlling the flow rate of brake fluid flowing through this region. The release valve 32 is provided in a region of the secondary flow path 26 that is upstream of the secondary flow path intermediate portion 26a. An accumulator 28 that stores brake fluid is provided in a region of the secondary flow path 26 upstream of the secondary flow path intermediate portion 26 a. More specifically, a release valve 32 and an accumulator 28 are provided, in that order from upstream, in the region of the secondary flow path 26 upstream of the secondary flow path intermediate portion 26 a. Opening and closing the release valve 32 opens and closes the flow path portion of the secondary flow path 26 where the release valve 32 is installed, thereby controlling the flow rate of brake fluid flowing through this region. A pump 29 that applies pressure to the brake fluid in the secondary flow path 26 is provided in a region of the secondary flow path 26 downstream of the secondary flow path intermediate portion 26 a.

[0049]

[0024] A switching valve 33 is provided in a region of the main flow path 25 closer to the master cylinder 20 than the main flow path intermediate portion 25a. The opening and closing operation of the switching valve 33 opens and closes the flow path portion of the main flow path 25 where the switching valve 33 is installed, thereby controlling the flow rate of brake fluid flowing through this region. A pressure-boosting valve 34 is provided in the pressure-boosting flow path 27. The opening and closing operation of the pressure-boosting valve 34 opens and closes the flow path portion of the pressure-boosting flow path 27 where the pressure-boosting valve 34 is installed, thereby controlling the flow rate of brake fluid flowing through the pressure-boosting flow path 27.

[0050]

[0025] A master cylinder hydraulic pressure sensor 35 for detecting the hydraulic pressure of the brake fluid in the master cylinder 20 is provided in the area of ​​the main flow path 25 closer to the master cylinder 20 than the switching valve 33. A wheel cylinder hydraulic pressure sensor 36 for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 23 is provided in the area of ​​the main flow path 25 closer to the wheel cylinder 23 than the inlet valve 31.

[0051]

[0026] In other words, the main flow path 25 connects the master cylinder port MP and the wheel cylinder port WP via the inlet valve 31. The sub-flow path 26 is defined as a part or all of the flow path that releases the brake fluid in the wheel cylinder 23 to the master cylinder 20 via the release valve 32. The booster flow path 27 is defined as a part or all of the flow path that supplies the brake fluid in the master cylinder 20 to the upstream side of the pump 29 of the sub-flow path 26 via the booster valve 34.

[0052]

[0027] The inlet valve 31 is a solenoid valve that switches the flow of brake fluid at its installation location from open to closed when, for example, it is switched from a de-energized state to an energized state. The release valve 32 is a solenoid valve that switches the flow of brake fluid through its installation location toward the secondary flow path intermediate portion 26a from closed to open when, for example, it is switched from a de-energized state to an energized state. The switching valve 33 is a solenoid valve that switches the flow of brake fluid at its installation location from open to closed when, for example, it is switched from a de-energized state to an energized state. The pressure booster valve 34 is a solenoid valve that switches the flow of brake fluid through its installation location toward the secondary flow path intermediate portion 26a from closed to open when, for example, it is switched from a de-energized state to an energized state.

[0053]

[0028] The pump 29 of the first hydraulic circuit 12 and the pump 29 of the second hydraulic circuit 14 are driven by a common motor 40. In other words, the motor 40 is the drive source of the pump 29.

[0054]

[0029] A hydraulic control unit 60 is configured by a base 61, the various components provided on the base 61 (hydraulic pressure regulating valve 30, accumulator 28, pump 29, master cylinder hydraulic pressure sensor 35, wheel cylinder hydraulic pressure sensor 36, motor 40, etc.), and a control device (ECU) 50.

[0055]

[0030] The control device 50 may be a single device or may be divided into multiple devices. The control device 50 may be attached to the base 61, or may be attached to a member other than the base 61. Part or all of the control device 50 may be composed of, for example, a microcomputer, a microprocessor unit, or the like, or may be composed of updatable firmware, or may be a program module executed by commands from a CPU, or the like. In the hydraulic control unit 60 according to this embodiment, at least the part of the control device 50 that controls the hydraulic pressure regulating valve 30 is composed of a control board 51, which will be described later.

[0056]

[0031] For example, under normal conditions, the control device 50 controls the inlet valve 31, the release valve 32, the switching valve 33, and the pressure-increasing valve 34 to be in a non-energized state. When the brake lever 11 is operated in this state, the piston (not shown) of the master cylinder 20 in the first hydraulic circuit 12 is pressed, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 23. The brake pad (not shown) of the brake caliper 22 is pressed against the rotor 3a of the front wheel 3, braking the front wheel 3. Furthermore, when the brake pedal 13 is operated, the piston (not shown) of the master cylinder 20 in the second hydraulic circuit 14 is pressed, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 23, and the brake pad (not shown) of the brake caliper 22 is pressed against the rotor 4a of the rear wheel 4, thereby braking the rear wheel 4.

[0057]

[0032] The outputs of each sensor (master cylinder hydraulic pressure sensor 35, wheel cylinder hydraulic pressure sensor 36, wheel speed sensor, acceleration sensor, etc.) are input to the control device 50. Depending on the outputs, the control device 50 outputs commands that control the operation of the motor 40 and each valve, etc., to perform pressure reduction control operation, pressure increase control operation, etc.

[0058]

[0033] For example, when the brake fluid pressure in the wheel cylinder 23 of the first hydraulic pressure circuit 12 is excessive or there is a possibility of excessive pressure, the control device 50 performs an operation to reduce the brake fluid pressure in the wheel cylinder 23 of the first hydraulic pressure circuit 12. In this case, the control device 50 drives the motor 40 while controlling the inlet valve 31 to an energized state, the release valve 32 to an energized state, the switching valve 33 to a de-energized state, and the pressure increase valve 34 to a de-energized state in the first hydraulic pressure circuit 12. Furthermore, when the brake fluid pressure in the wheel cylinder 23 of the second hydraulic pressure circuit 14 is excessive or there is a possibility of excessive pressure, the control device 50 performs an operation to reduce the brake fluid pressure in the wheel cylinder 23 of the second hydraulic pressure circuit 14. At that time, the control device 50 drives the motor 40 while controlling the inlet valve 31 to an energized state, the release valve 32 to an energized state, the switching valve 33 to a de-energized state, and the pressure increase valve 34 to a de-energized state in the second hydraulic pressure circuit 14.

[0059]

[0034] For example, when the brake fluid pressure in the wheel cylinder 23 of the first hydraulic pressure circuit 12 is insufficient or there is a possibility of insufficient pressure, the control device 50 increases the brake fluid pressure in the wheel cylinder 23 of the first hydraulic pressure circuit 12. In this case, the control device 50 controls the inlet valve 31 to a non-energized state, the release valve 32 to a non-energized state, the switching valve 33 to an energized state, and the pressure increase valve 34 to an energized state in the first hydraulic pressure circuit 12, while driving the motor 40. Furthermore, when there is a shortage or possibility of a shortage of brake fluid pressure in the wheel cylinder 23 of the second hydraulic pressure circuit 14, the control device 50 performs an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic pressure circuit 14. At that time, the control device 50 drives the motor 40 while controlling the inlet valve 31 to a non-energized state, the release valve 32 to a non-energized state, the switching valve 33 to a powered state, and the pressure booster valve 34 to a powered state in the second hydraulic pressure circuit 14.

[0060]

[0035] That is, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic pressure circuit 12 to perform anti-lock brake control of the first hydraulic pressure circuit 12. The hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic pressure circuit 14 to perform anti-lock brake control of the second hydraulic pressure circuit 14. The hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic pressure circuit 12 to perform automatic pressure increase control of the first hydraulic pressure circuit 12. In addition, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14, thereby performing automatic pressure increase control of the second hydraulic circuit 14.

[0061]

[0036] <Configuration of the hydraulic control unit> As described above, the hydraulic control unit 60 controls the hydraulic pressure of the brake fluid. This hydraulic control unit 60 is made up of a base 61, a hydraulic pressure regulating valve 30, a control board 51 of the control device 50, a housing 70, and other components. The configuration of the unitized parts of the hydraulic control unit 60 will be explained below.

[0062]

[0037] Fig. 3 is a partial cross-sectional side view of a hydraulic control unit according to an embodiment of the present invention, showing the state in which the base and the housing are fixed together. Fig. 4 is a diagram showing the base of the hydraulic control unit according to an embodiment of the present invention and the components provided on the base. Fig. 5 is a partial cross-sectional side view of a hydraulic control unit according to an embodiment of the present invention, showing the state before the base and the housing are fixed together. Fig. 4 is a diagram in which the base 61 and the components provided on the base 61 are observed from the top to the bottom of Fig. 3. That is, Fig. 4 is a diagram in which the base 61 and the components provided on the base 61 are observed in the direction in which the base 61 and the housing 70 face each other.

[0063]

[0038] The base 61 is formed of a metal such as an aluminum alloy and has, for example, a substantially rectangular parallelepiped shape. Each side of the base 61 may be flat, may include a curved portion, or may include a step. A motor 40 and a hydraulic pressure regulating valve 30 are erected on a side surface 61a of the base 61. An eccentric body 42 that rotates together with the output shaft 41 of the motor 40 is attached to the output shaft 41 of the motor 40. When the eccentric body 42 rotates, the plunger of the pump 29, which is pressed against the outer peripheral surface of the eccentric body 42, reciprocates, and brake fluid is transported from the suction side to the discharge side of the pump 29.

[0064]

[0039] The housing 70 is made of, for example, resin and has, for example, a substantially rectangular parallelepiped shape. The housing 70 houses the control board 51. Specifically, the housing 70 includes a main body 71 and a lid 72. The main body 71 has a substantially box-like shape with an open side facing the base 61. The lid 72 covers the end of the main body 71 opposite the base 61. The control board 51 is disposed in a space surrounded by the main body 71 and the lid 72.

[0040] The control board 51 is electrically connected to the hydraulic pressure regulating valve 30. In this embodiment, the control board 51 is also electrically connected to the motor 40. The connection configuration of the control board 51 with the motor 40 and the hydraulic pressure regulating valve 30 is not particularly limited, but in this embodiment, the control board 51 is electrically connected to the motor 40 and the hydraulic pressure regulating valve 30 as follows: A connection terminal 44 is attached to the main body 71 of the housing 70. The control board 51 is electrically connected to this connection terminal 44. The motor 40 has a motor terminal 43. The motor terminal 43 of the motor 40 is electrically connected to the connection terminal 44, thereby electrically connecting the motor 40 and the control board 51. The hydraulic pressure regulating valve 30 also has a terminal 30a. The terminal 30a is electrically connected to the control board 51, thereby electrically connecting the hydraulic pressure regulating valve 30 to the control board 51.

[0065]

[0041] The hydraulic control unit 60 also includes a plurality of holes provided in one of the base 61 and the housing 70, and a plurality of pins provided in the other of the base 61 and the housing 70. The pins are inserted into the holes to position the base 61 and the housing 70. In this embodiment, an example is shown in which a plurality of holes are provided in the base 61 and a plurality of pins are provided in the housing 70. Note that, hereinafter, at least one of the plurality of holes will be referred to as a selected hole 64, and a pin of the plurality of pins inserted into the selected hole 64 will be referred to as a selected pin 74. Also, hereinafter, the direction in which the selected pin 74 is inserted into the selected hole 64 will be referred to as an insertion direction D. In addition, the dimension perpendicular to the insertion direction D will be referred to as the width dimension W.

[0066]

[0042] Specifically, in the hydraulic control unit 60 according to this embodiment, three holes that open to the side surface 61a are provided in the base 61. In addition, in the hydraulic control unit 60 according to this embodiment, three pins are provided in the housing 70. More specifically, in the hydraulic control unit 60, holes 64a, 64b, and 64c that open to the side surface 61a are provided in the base 61. In addition, in the hydraulic control unit 60, the housing 70 is provided with a pin 74a inserted in the hole 64a, a pin 74b inserted in the hole 64b, and a pin 74c inserted in the hole 64c. In addition, in this embodiment, hole portion 64c is the selected hole portion 64, and pin 74c is the selected pin 74.

[0067]

[0043] The holes 64a, 64b, and the pins 74a and 74b have the same configuration as the holes and pins that conventional hydraulic control units have for positioning the base and housing. Specifically, the hole 64a is a cylindrical hole. The pin 74a inserted into the hole 64a is a cylindrical pin. The diameter of the hole 64a is slightly larger than the diameter of the pin 74a. By inserting the pin 74a into the hole 64a, movement of the housing 70 relative to the base 61 in a direction perpendicular to the extension direction of the hole 64a and the pin 74a can be restricted. The hole 64b is an elongated hole with the alignment direction of the pins 74a and 74b being the longitudinal direction. The pin 74b inserted into the hole 64b is a cylindrical pin. The width of the inner peripheral surfaces 64d and 64e of the hole 64b, which face each other in the short direction of the elongated hole shape, is slightly larger than the diameter of the pin 74b. By inserting the pin 74b into the hole 64b, the rotation of the housing 70 relative to the base 61 around the hole 64a and pin 74a can be restricted. This positions the base 61 and the housing 70.

[0068]

[0044] The pin 74c, which is the selected pin 74, is press-fit into the hole 64c, which is the selected hole 64. That is, before the pin 74c is inserted into the hole 64c, the width dimension W of at least a portion of the portion of the pin 74c that is inserted into the hole 64c is larger than the width dimension W of at least a portion of the portion of the hole 64c that the pin 74c is inserted into. In this embodiment, the pin 74c, which is the selected pin 74, has a width reducing portion 80 at the portion that contacts the hole 64c, where the width dimension W decreases along the insertion direction D. This width-reducing portion 80 allows the pin 74c, which is the selected pin 74, to be press-fit into the hole portion 64c, which is the selected hole portion 64. Specifically, in this embodiment, the pin 74c has a circular cross section. Therefore, the width-reducing portion 80 has a tapered shape in which the diameter decreases along the insertion direction D. Also, in this embodiment, the pin 74c, which is the selected pin 74, has the width-reducing portion 80 over the entire area where it comes into contact with the hole portion 64c.

[0069]

[0045] Here, the insertion of pin 74c, which is the selected pin 74, into hole 64c, which is the selected hole 64, is performed by press-fitting, which is more difficult than the insertion of pin 74a into hole 64a and the insertion of pin 74b into hole 64b. For this reason, when the hydraulic control unit 60 is configured to have hole 64c, which is the selected hole 64, and pin 74c, which is the selected pin 74, in addition to hole 64a, hole 64b, pin 74a, and pin 74b, which have the same configurations as the holes and pins that conventional hydraulic control units have for positioning the base and housing, it is preferable that the length of the selected pin 74 be as follows: Specifically, as shown in FIG. 5, the length of the selected pin 74 is preferably such that, after pin 74a is inserted into hole portion 64a and pin 74b is inserted into hole portion 64b, pin 74c, which is the selected pin 74, comes into contact with hole portion 64c, which is the selected hole portion 64.

[0070]

[0046] As will be described later in a modified example, the width-reducing portion 80 may be provided in the selected hole portion 64. Hereinafter, one of the selected hole portion 64 and the selected pin 74 that is provided with the width-reducing portion 80 will be referred to as a first positioning portion 81. The other of the selected hole portion 64 and the selected pin 74 that is not provided with the width-reducing portion 80 will be referred to as a second positioning portion 82.

[0071]

[0047] The above-described base 61 and housing 70 are bonded together with an adhesive 90. In this embodiment, the main body 71 of the housing 70 is bonded to the side surface 61 a of the base 61 with the adhesive 90. The adhesive 90 seals the gap between the base 61 and the housing 70. Specifically, in this embodiment, the outer edge of the side surface 61 a of the base 61 forms an adhesive area 62 where the housing 70 is bonded with the adhesive 90. In addition, the end of the main body 71 of the housing 70 on the base 61 side forms an adhesive area 73 where the housing 61 is bonded with the adhesive 90. Although the type of adhesive 90 is not particularly limited, in this embodiment, a silicone adhesive is used as the adhesive 90.

[0072]

[0048] The base 61 and the housing 70, which are bonded together with the adhesive 90, are fixed together with bolts 95. Specifically, the base 61 and the main body 71 of the housing 70 are fixed together by passing the bolts 95 through the main body 71 of the housing 70 and screwing the bolts 95 into the screw holes 63 formed in the base 61. In other words, the base 61 and the housing 70, which are bonded together with the adhesive 90, are fixed together by tightening the bolts 95.

[0073]

[0049] In hydraulic control units mounted on automobiles and the like, the gap between the base and the housing is sealed with an O-ring. However, when sealing the gap between the base and the housing with an O-ring, it is necessary to fix the base and the housing near the O-ring, for example by arranging fixing screws on the outer periphery of the O-ring. For this reason, when sealing the gap between the base and the housing with an O-ring, the hydraulic control unit becomes large. On the other hand, straddle-type vehicles, which are a type of vehicle, have less freedom in component layout compared to automobiles and the like, and therefore less freedom in mounting the hydraulic control unit. For this reason, there has been a demand for smaller hydraulic control units mounted on straddle-type vehicles. Therefore, in conventional hydraulic control units for saddle-ride type vehicles, like the hydraulic control unit 60 of this embodiment, the base and the housing are bonded together with a silicone adhesive, and the space between the base and the housing is sealed by the silicone adhesive.

[0074]

[0050] Here, conventional hydraulic control units for saddle-ride type vehicles require consideration of the following. Specifically, conventional hydraulic control units for saddle-ride type vehicles are assembled as follows. First, a silicone adhesive is applied to the base. Then, the housing is pressed against the base, and positioning pins provided on the housing are inserted into holes provided in the base to position the housing and the base. Hereinafter, this process will be referred to as the positioning process. During the positioning process, the housing comes into contact with the adhesive. Thereafter, the base and housing are fixed with bolts. Hereinafter, this process will be referred to as the fixing process. The positioning process and the fixing process described above are performed in different locations. Therefore, the load that presses the housing against the base when the housing and the base are positioned does not act on the housing during the transition from the positioning process to the fixing process. Therefore, during the transition from the positioning step to the fixing step, the housing may become misaligned with respect to the base due to vibrations acting on the base and housing, etc. When such misalignment occurs, part of the silicone adhesive adhering to the housing is pulled by the housing and becomes stretched. Also, if the shape of the bonding portion of the housing to the base is deformed relative to the shape of the bonding portion of the base to the housing, part of the silicone adhesive adhering to the housing will also be pulled by the housing and become stretched during the transition from the positioning step to the fixing step.

[0075]

[0051] When the above-mentioned fixing process is performed after the silicone adhesive has stretched in this way, it is necessary to consider the possibility that when the bolts are tightened and the base and housing approach each other at the location where the silicone adhesive has stretched, air may be contained in the silicone adhesive at that location, causing bubbles to form in the silicone adhesive. If bubbles form in the silicone adhesive, holes connecting the inside and outside of the hydraulic control unit may be formed at the location where the bubbles have formed due to the pressure difference between the inside and outside of the hydraulic control unit, loads acting on the hydraulic control unit from the outside, etc., and the sealing performance between the housing and the base may be reduced.

[0076]

[0052] On the other hand, the hydraulic control unit b60 according to this embodiment, which is provided with the selected hole portion 64 and the selected pin 74, is manufactured by the following method, which can reduce the possibility of deterioration in the sealing performance between the base 61 and the housing 70 compared to the conventional method.

[0077]

[0053] <Method of manufacturing hydraulic control unit> Fig. 6 is a flowchart for explaining a method of manufacturing a hydraulic control unit according to an embodiment of the present invention. Fig. 6 shows the manufacturing process for fixing the base body 61 and the housing 70 together after the necessary parts have been attached to the base body 61 and the housing 70. Hereinafter, one of the base body 61 and the housing 70, which is the part to which the adhesive 90 is applied, will be referred to as the first part 85. Also, the other of the base body 61 and the housing 70, which is different from the first part 85, will be referred to as the second part 86. In Figs. 3 to 5, the base body 61 is the first part 85, and the housing 70 is the second part 86.

[0078]

[0054] After the necessary parts are attached to the housing 70 and the base 61, the application process of step S1 is performed. The application process of step S1 is a process of applying adhesive 90 to the first part 85. Specifically, in the application process, the adhesive 90 is applied to the bonding location 62 of the base 61, which is the first part 85. Note that the adhesive 90 may also be applied to the bonding location 73 of the housing 70. In this case, the housing 70 becomes the first part 85, and the base 61 becomes the second part 86.

[0079]

[0055] Step S2 after step S1 is a contact suppression step. The contact suppression step is also a positioning step for positioning the base 61 and the housing 70. The contact suppression step is a step in which, when a pin provided on the housing 70 is inserted into a hole provided in the base 61 to position the base 61 and the housing 70, the selected pin 74 is press-fit into the selected hole 64 to maintain a gap between the base 61 and the housing 70, thereby suppressing contact between the housing 70, which is the second component 86, and the adhesive 90. Specifically, in the contact suppression step, first, the pin 74a is inserted into the hole 64a, and the pin 74b is inserted into the hole 64 to position the base 61 and the housing 70. As the insertion of the pin 74a into the hole 64a and the pin 74b into the hole 64b continues, the pin 74c that is the selected pin 74 comes into contact with the hole 64c that is the selected hole 64, and the pin 74c that is the selected pin 74 starts to be pressed into the hole 64c that is the selected hole 64. At this time, the pin 74c cannot be press-fitted into the hole 64c unless the load required to press-fit the pin 74c, which is the selected pin 74, into the hole 64c, which is the selected hole 64, is equal to or greater than a specified load. Therefore, in the contact suppression process, the base 61 and the housing 70 are positioned while maintaining a gap between the base 61 and the housing 70, thereby suppressing contact between the housing 70, which is the second part 86, and the adhesive 90.

[0080]

[0057] Step S3 after step S2 is a fixing step. In the fixing step, the bolt 95 is tightened to bring the housing 70 (second component 86) into contact with the adhesive 90, thereby fixing the base 61 (first component 85) and the housing 70 (second component 86). Specifically, as the bolt 95 is tightened in the fixing step, the tightening force of the bolt 95 presses the pin 74c (selected pin 74) into the hole 64c (selected hole 64). This reduces the gap between the base 61 and the housing 70, and eventually the housing 70 (second component 86) comes into contact with the adhesive 90. Then, by continuing to tighten the bolt 95, the first part 85, which is the base 61, and the second part 86, which is the housing 70, are fixed together by the tightening force of the bolt 95.

[0081]

[0058] In this way, the hydraulic control unit 60 according to this embodiment can prevent contact between the second component 86 and the adhesive 90 in a stage before the fixing process in which the base 61 and the housing 70 are fixed with the bolts 95, and can prevent the adhesive 90 from becoming stretched. Therefore, the hydraulic control unit 60 according to this embodiment can reduce the possibility of air bubbles being generated in the adhesive 90 during the fixing process more than ever before. Therefore, the hydraulic control unit 60 according to this embodiment can reduce the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 more than ever before.

[0082]

[0059] Here, it is preferable that the hydraulic control unit 60 according to this embodiment has the following configuration.

[0083]

[0060] Preferably, the housing 70 is made of resin. When the housing 70 is made of resin, the selected hole portion 64 and the selected pin 74, whichever is formed in the housing 70, are made of resin. Therefore, when the housing 70 is made of resin, the selected pin 74 can be easily press-fit into the selected hole portion 64 by the tightening force of the bolt 95, improving the assembly of the hydraulic control unit b60.

[0084]

[0061] When the housing 70 is made of resin, the first positioning portion 81 is preferably provided on the housing 70. This makes it possible to form the width-reduced portion 80 of the first positioning portion 81 when the housing 70 is molded from resin. Therefore, when the housing 70 is made of resin, providing the first positioning portion 81 on the housing 70 makes it easier to form the width-reduced portion 80, thereby suppressing an increase in the manufacturing cost of the hydraulic control unit 60.

[0085]

[0062] Preferably, as shown in Fig. 4, when the hydraulic control unit 60 is observed in the opposing direction of the base 61 and the housing 70, the adhesive 90 is arranged in a ring shape. Then, as shown in Fig. 4, when the hydraulic control unit 60 is observed in the opposing direction of the base 61 and the housing 70, at least one set of holes formed in one of the base 61 and the housing 70 and pins inserted into the holes are arranged on the inner circumferential side of the adhesive 90. 4 shows an example in which the pair of hole 64a and pin 74a, the pair of hole 64b and pin 74b, and the pair of hole 64c and pin 74c are all arranged on the inner periphery of adhesive 90. This reduces the space required to arrange the holes provided in either base 61 or housing 70 and the pins inserted into the holes on the outer periphery of adhesive 90, thereby making it possible to reduce the size of the hydraulic control unit 60.

[0086] [ 0 0 6 3 ]

[0087] <Modification> Figure 7 is a partial cross-sectional side view of a modification of a hydraulic control unit according to an embodiment of the present invention, showing the state before the base and the housing are fixed together. In the hydraulic control unit 60 described above, the holes 64a, 64b, and 64c are provided in the base 61, and the pins 74a, 74b, and 74c are provided in the housing 70. However, this is not limiting, and as shown in Figure 7, the holes 64a, 64b, and 64c may be provided in the housing 70, and the pins 74a, 74b, and 74c may be provided in the base 61. In the hydraulic control unit 60 configured in this manner, contact between the second component 86 and the adhesive 90 can be suppressed and the adhesive 90 can be prevented from becoming stretched in a stage prior to the fixing process in which the base 61 and the housing 70 are fixed with the bolts 95. Therefore, in the hydraulic control unit 60 configured in this manner, the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 can be reduced more than in the past.

[0088]

[0064] Fig. 8 is a partial cross-sectional side view of a modified example of a hydraulic control unit according to an embodiment of the present invention, showing the state before the base and the housing are fixed together. In the hydraulic control unit 60 described above, the selected pin 74 has a reduced width portion 80. That is, the selected pin 74 is the first positioning portion 81, and the selected hole 64 is the second positioning portion 82. However, as shown in Fig. 8, the selected hole 64 may have a reduced width portion 80. That is, the selected hole 64 may be the first positioning portion 81, and the selected pin 74 may be the second positioning portion 82. In the hydraulic control unit 60 configured in this manner, contact between the second part 86 and the adhesive 90 can be suppressed and the adhesive 90 can be prevented from becoming stretched in a stage prior to the fixing process in which the base 61 and the housing 70 are fixed with the bolts 95. Therefore, in the hydraulic control unit 60 configured in this manner, the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 can be reduced more than in the past.

[0089]

[0065] Fig. 9 is a partial cross-sectional side view of a modified example of a hydraulic control unit according to an embodiment of the present invention, showing the state before the base and the housing are fixed together. In the above-described hydraulic control unit 60, in addition to the hole 64a, hole 64b, pin 74a, and pin 74b that are configured similarly to the holes and pins that conventional hydraulic control units have for positioning the base and the housing, a hole 64c that is the selected hole 64 and a pin 74c that is the selected pin 74 are provided. However, the hydraulic control unit 60 may have a hole 64a that is the selected hole 64 and a pin 74a that is the selected pin 74, as shown in Fig. 9, for example. Further, for example, in the hydraulic control unit 60, the hole 64b may be the selected hole 64, and the pin 74b may be the selected pin 74. In the hydraulic control unit 60 configured in this manner, contact between the second part 86 and the adhesive 90 can be suppressed and the adhesive 90 can be prevented from becoming stretched in a stage prior to the fixing process in which the base 61 and the housing 70 are fixed with the bolts 95. Therefore, in the hydraulic control unit 60 configured in this manner, the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 can be reduced more than in the past. Note that the hydraulic control unit 60 configured in this manner does not need to have the hole 64c and the pin 74c.

[0090]

[0066] Figure 10 is a cross-sectional view showing a part of a modified example of a hydraulic control unit according to an embodiment of the present invention. This Figure 10 shows a part of a modified example of the hydraulic control unit 60, observed from a cross section corresponding to the A-A cross section in Figure 4. As described above, in the hydraulic control unit 60, the hole portion 64b may be the selected hole portion 64. When the hole portion 64b, which is an elongated hole portion, is the selected hole portion 64 and the hole portion 64b has a reduced width portion 80, the reduced width portion 80 has the shape shown in Figure 10. Specifically, the width-reducing portion 80 is not tapered, but has a shape in which the width between the inner peripheral surfaces 64d and 64e, which face each other in the short direction of the elongated hole shape, becomes smaller along the insertion direction D.

[0091]

[0067] Fig. 11 is a partial cross-sectional side view of a modified example of a hydraulic control unit according to an embodiment of the present invention, illustrating a state before the base and the housing are fixed together. In the above-described hydraulic control unit 60, the selected hole 64 or the selected pin 74 is configured to have a reduced width portion 80. However, as shown in Fig. 11, the selected hole 64 and the selected pin 74 do not need to have a reduced width portion 80 as long as the selected pin 74 is press-fit into the selected hole 64. If the selected pin 74 is press-fit into the selected hole 64, a gap can be maintained between the base 61 and the housing 70 in the contact suppression step, thereby suppressing contact between the housing 70, which is the second component 86, and the adhesive 90. In other words, if the hydraulic control unit 60 is configured so that the selected pin 74 is press-fit into the selected hole portion 64, contact between the second part 86 and the adhesive 90 can be suppressed at a stage prior to the fixing process in which the base 61 and the housing 70 are fixed with the bolt 95, and the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 can be reduced more than in the past.

[0092]

[0068] Fig. 12 is a diagram showing the configuration of a brake system equipped with a modified hydraulic pressure control unit according to an embodiment of the present invention. The hydraulic pressure control unit 60 described above is configured to perform antilock brake control and automatic pressure increase control. However, the hydraulic pressure control unit 60 may be configured not to perform automatic pressure increase control. In this case, the hydraulic pressure control unit 60 does not have the switching valve 33, the pressure increase valve 34, and the pressure increase flow path 27 required for automatic pressure increase control, as compared to the configuration shown in Fig. 2.

[0093]

[0069] Here, the hydraulic control unit 60 configured not to perform automatic pressure increase control may be configured to include a pump 29 that returns the brake fluid released from the wheel cylinder 23 to the internal flow path 24 to the master cylinder 20, and a motor 40 that drives the pump 29, as described above. Also, the hydraulic control unit 60 configured not to perform automatic pressure increase control may be configured not to include the pump 29 and the motor 40, as shown in Fig. 12. In other words, the hydraulic control unit 60 configured not to perform automatic pressure increase control may be configured to return the brake fluid released from the wheel cylinder 23 to the internal flow path 24 to the master cylinder 20 without a pump. In the hydraulic pressure control unit 60 configured as described above, when the hydraulic pressure of the brake fluid in the accumulator 28 becomes higher than the hydraulic pressure of the brake fluid in the master cylinder 20, the pressure difference causes the brake fluid in the accumulator 28 to return to the master cylinder 20.

[0094]

[0070] <Effects of the hydraulic pressure control unit> The effects of the hydraulic pressure control unit according to this embodiment will be described.

[0095]

[0071] A hydraulic control unit 60 according to this embodiment is mounted on a saddle-ride type vehicle 100 and is a hydraulic control unit of a brake system 10 capable of performing anti-lock brake control. The hydraulic control unit 60 includes a base 61, a housing 70, and a bolt 95. The base 61 has an internal flow path 24 that connects the wheel cylinder 23 and the master cylinder 20. The housing 70 houses a control board 51 that controls a hydraulic pressure regulating valve 30 that opens and closes the internal flow path 24, and is bonded to the base 61 with an adhesive 90, and the space between the housing 70 and the base 61 is sealed with an adhesive 90. The bolts 95 secure the base 61 and the housing 70 together. The hydraulic control unit 60 also has a plurality of holes formed in one of the base 61 and the housing 70, and a plurality of pins formed in the other of the base 61 and the housing 70 that are inserted into the holes to position the base 61 and the housing 70. Here, at least one of the plurality of holes formed in one of the base 61 and the housing 70 is referred to as the selected hole 64. Of the plurality of pins formed in the other of the base 61 and the housing 70, the pin inserted into the selected hole 64 is referred to as the selected pin 74. One of the selected hole portion 64 and the selected pin 74 is referred to as the first positioning portion 81, and the other of the selected hole portion 64 and the selected pin 74 is referred to as the second positioning portion 82. The direction in which the selected pin 74 is inserted into the selected hole portion 64 is referred to as the insertion direction D, and the dimension in the direction perpendicular to the insertion direction D is referred to as the width dimension W. When defined in this way, the selected pin 74 is press-fit into the selected hole portion 64. The first positioning portion 81 is provided with a width reducing portion 80 where it contacts the second positioning portion 82, where the width dimension W decreases along the insertion direction D.

[0096]

[0072] As described above, the hydraulic control unit 60 configured in this manner can prevent the adhesive 90 from becoming stretched in the stage prior to the fixing process in which the base 61 and the housing 70 are fixed with the bolts 95, and can reduce the possibility of a deterioration in the sealing performance between the base 61 and the housing 70 compared to conventional cases.

[0097]

[0073] Although the hydraulic control unit 60 according to this embodiment has been described above, the hydraulic control unit according to the present invention is not limited to the description of this embodiment. The hydraulic control unit according to the present invention may be implemented in a manner that only a part of this embodiment is implemented.

[0098] [Explanation of symbols]

[0099] [ 0 0 7 4 ]

[0100] ! Fuselage, 2 Handle, 3 Front wheel, 3a Rotor, 4 Rear wheel, 4a Rotor, 10 Brake system, !1 Brake lever, 12 First hydraulic circuit, 13 Brake pedal, !4 Second hydraulic circuit, 20 Master cylinder, 21 Reservoir, 22 Brake caliper, 23 Wheel cylinder, 24 Internal flow path, 25 Main flow path, 25a Mid-way portion of main flow path,

[0101] 26 Sub-flow passage, 26a Sub-flow passage intermediate portion, 27 Pressure booster passage, 28 Accumulator, 29 Pump, 30 Hydraulic pressure regulating valve, 30a Terminal, 31 Fill valve, 32 Release valve, 33 Switching valve, 34 Pressure booster valve, 35 Master cylinder hydraulic pressure sensor, 36 Wheel cylinder hydraulic pressure sensor, 40 Motor, 41 Output shaft, 42 Eccentric body, 43 Motor terminal, 44 Connection terminal, 50 Control device, 51 Control board, 60 Hydraulic pressure control unit, 6! Base, 61a Side, 62 Adhesion point, 63 Screw hole, 64 Selected hole portion, 64a Hole portion, 64b Hole portion, 64c hole portion, 64d inner surface, 64e inner surface, 7〇 housing, 71 main body portion, 72 cover portion, 73 adhesive point, 74 selected pin, 74a pin, 74b pin, 74c pin, 80 width reduction portion, 81 first positioning portion, 82 second positioning portion, 85 first part, 86 second part, 9〇 adhesive, 95 bolt, 100 saddle-ride type vehicle, MP master cylinder port, wP wheel cylinder port.

Claims

[Document name] Scope of claims

1. A hydraulic control unit (60) for a brake system (10) mounted on a saddle-ride type vehicle (100) and capable of performing antilock brake control, comprising: a base (61) having an internal flow path (24) that connects a wheel cylinder (23) and a master cylinder (20) to each other; a housing (70) that houses a control board (51) that controls a hydraulic pressure adjusting valve (30) that opens and closes the internal flow path (24), the housing (70) being bonded to the base (61) with an adhesive (90) and sealing the gap between the base (61) and the housing (70); and A plurality of holes ( a plurality of pins (74a, 74b, 74c) provided in the other of the base body (61) and the housing (70) and inserted into the hole portions (64a, 64b, 64c) to position the base body (61) and the housing (70); and a bolt (95) for fixing the base body (61) and the housing (70), wherein at least one of the plurality of hole portions (64a, 64b, 64c) is a selected hole portion (64), and the plurality of pins (74a, 74b, 74c) are inserted into the hole portions (64a, 64b, 64c) to position the base body (61) and the housing (70). The pins (74a, 74b, 74c) inserted into the selected hole portions (64) of the pins (74a, 74b, 74c) are designated as selected pins (74), one of the selected hole portions (64) and the selected pins (74) is designated as a first positioning portion (81), and the other of the selected hole portions (64) and the selected pins (74) is designated as a second positioning portion (82). a hydraulic pressure control unit (60) in which a direction in which the selected pin (74) is inserted into the selected hole portion (64) is defined as an insertion direction (D) and a dimension in a direction perpendicular to the insertion direction (D) is defined as a width dimension (W), the selected pin (74) is press-fitted into the selected hole portion (64), and the first positioning portion (81) is provided with a width reducing portion (80) at a location where the first positioning portion (81) contacts the second positioning portion (82), the width dimension (W) of which decreases along the insertion direction (D).

2. The hydraulic control unit (60) according to claim 1, wherein the housing (70) is made of resin.

3. The hydraulic control unit (60) according to claim 2, wherein the first positioning portion (81) is provided on the housing (70).

4. A hydraulic control unit (60) according to any one of claims 1 to 3, wherein the selected pin (74) is provided in the housing (70).

5. A hydraulic control unit (60) according to any one of claims 1 to 3, wherein the first positioning portion (81) is the selected pin (74).

6. When observed in the opposing direction of the housing (70) and the base (61), the adhesive (90) is arranged in an annular shape, and the hole portions (64a, 64b, 64c) and at least one pair of the pins (74a, 74b, 74c) inserted into the hole portions (64a, 64b, 64c) are arranged on the inner circumferential side of the adhesive (90). A hydraulic control unit (60) according to any one of claims 1 to 3.

3. The hydraulic control unit (60) according to any one of claims 1 to 3, wherein the first positioning portion (81) is provided with the width-reducing portion (80) over the entire area where it contacts the second positioning portion (82).

8. A hydraulic control unit (60) according to any one of claims 1 to 3, wherein the width-reducing portion (80) has a tapered shape.

9. A hydraulic control unit (60) according to any one of claims 1 to 3, comprising: a pump (29) that returns brake fluid that has been released from the wheel cylinder (23) to the internal flow path (24) to the master cylinder (20); and a motor (40) that drives the pump (29). [Claim 1 ○] A hydraulic control unit (60) according to any one of claims 1 to 3, configured to return brake fluid released from the wheel cylinder (23) to the internal flow path (24) to the master cylinder (20) in a pumpless manner.

11. A saddle-ride type vehicle (100) equipped with a hydraulic control unit (60) according to any one of claims 1 to 3.

12. A manufacturing method for a hydraulic control unit (60) of a brake system (10) mounted on a saddle-ride type vehicle (100) and capable of performing antilock brake control, the hydraulic control unit (60) comprising: a base (61) in which an internal flow path (24) that connects a wheel cylinder (23) and a master cylinder (20) is formed; a housing (70) that houses a control board (51) that controls a hydraulic pressure regulating valve (30) that opens and closes the internal flow path (24), the housing (70) being bonded to the base (61) with an adhesive (90) and sealing the gap between the housing and the base (61) with the adhesive (90); a plurality of holes (64a, 64b, 64c) formed in one of the base body (61) and the housing (70); and a plurality of holes (64a, 64b, 64c) formed in the other of the base body (61) and the housing (70), and a bolt (95) for fixing the base body (61) and the housing (70), wherein at least one of the plurality of hole portions (64a, 64b, 64c) is a selected hole portion (64), and the pins (74a, 74b, 74c) inserted into the selected hole portion (64) of the plurality of pins (74a, 74b, 74c) are referred to as selected pins (74a, 74b, 74c). a first component (85) that is one of the base body (61) and the housing (70) and that is coated with the adhesive (90); and a second component (85) that is the other of the base body (61) and the housing (70) and that is coated with the adhesive (90). When a part different from the first part (85) is used as the second part (86), the adhesive (90) is applied to the first part (85) in an application step (S1), and when the pins (74a, 74b, 74c) are inserted into the holes (64a, 64b, 64c) to position the base (61) and the housing (70), the selected pins (74) are press-fitted into the selected holes (64) to maintain a gap between the base (61) and the housing (70), thereby suppressing contact between the second part (86) and the adhesive (90). and a fixing step (S3) of tightening the bolts (95) to bring the second component (86) into contact with the adhesive (90) and fix the first component (85) and the second component (86) together. 17

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